Prox PRO-01.4355.B
Prox Piston Kit Kx250 '25 14.0:1 (77.97Mm)
215.00 €
Includes VAT 25.5%

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ProX pistons are precision-finished using the latest state-of-the-art CNC machinery. They're made from the same alloy that the leading Japanese engine manufacturers rely on. ProX piston kits are a top-tier alternative to OEM parts when you need a spare for your motorcycle, scooter, moped, ATV or jet ski.

Most ProX pistons feature an OEM-style coating that aids the break-in process.
On top of that, ProX has developed a special skirt coating that reduces friction throughout the piston's entire service life. This black coating is specifically engineered to boost performance.

Nicasil/coated cylinders cannot be bored. Pistons are available in 0.01mm increments (sizes A, B, C). This piston has a diameter of 77.97 mm (standard cylinder bore 78.00 mm).

In addition to the piston, the retail package includes piston rings, a piston pin and circlips.

Compression ratio 14.0:1
Country of manufacture USA

Compatible bikes:

  • Kawasaki KX250F 2025-2026
  • Kawasaki KX250X 2025-2026